About us

Created in 1976, CELOG is an independent IT expertise center specialized in intangible proof. CELOG initially developed its activity around research and collection of evidence in the digital environment. Today, it provides many companies with its recognized know-how and experience gained over 30 years in the field of computer forensic.

The Expertise Center is organized around three activities


Software solutions and hosting

Thanks to its legal and technical expertise, the Expertise Center publishes legal solutions such as the transfer.legal service or APIs to build probatory systems in a fast, reliable and simple way.

It provides its customers with a hybrid probatory infrastructure by hosting both blockchain open source technologies (Hyperledger) and trusted services within the meaning of the European regulation on electronic identification and trust services for electronic transactions.

Nos solutions logicielles d'hébergement
Celog: expertise et accompagnement

Expertise and support

For more than 20 years, the Expertise Center has been involved in pre-litigation and litigation cases in various fields of law (IT, labor, competition, press, etc.) and of probatory IT. As such, it has acquired a unique know-how at the border of these two worlds to offer its clients a complete support offer with a legal and technical perspective.

Monitoring and publication

At the forefront of the latest technical and legal developments, CELOG publishes the reference monthly publication “Expertises des Systèmes d’Information” and the information site about new technologies law: legalis.net

Veille technologique

Customers and references

Due to confidentiality, we do not communicate on our customers. For more information, we invite you to contact the Expertise Center.